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GA21,9084-9
F i l eN o . S 3 - 1 5
Preface
T h i s p u b l i c a t i o n o n t a i n sn f q r m a t i o n b o u tt h e p h y s i c a l
c i a
i n s t a l l a t i oo f a n I B M S y s t e m / 3 .l t i n c l u d e sn f o r m a t i o n
n i
about space requirements siteselection, proposed
and a
planning schedule, a brief description the System/3
and of
u n i t sa n dt h e i r l a y o u t s p l a nv i e w s )w i t h e x p l a n a t i o n s
( . of
e l e c t r i c a l n de n v i r o n m e n t r e q u i r e m e n t s .
a al
The requirements the system subject modification
of are to
by engi
neering
development.
Tenth Edition (July 19771
T h i s i s a m a j o r r e v i s i o n o f , a n d o b s o l e t e s , G A 2 l - 9 0 8 4 - 8 .M i n o r c h a n g e s h a v e b e e n m a d e
t h r o u g h t h e m a n u a l . c h a n g e sa r e i n d i c a t e d b y a v e r t i c a l l i n e a t t h e l e f t o f t h e c h a n g e .
c h a n g e s a r e c o n t i n u a l l y m a d e t o t h e s p e c i f i c a t i o n s e r e i n ;a n y s u c h c h a n g e s i l l b e
h w
reported in subsequent revisions or technical newsletters.
R e q u e s t sf o r c o p i e s o f I B M p u b l i c a t i o n s s h o u l d b e m a d e t o y o u r I B M r e p r e s e n t a t i v e
o r t o t h e I B M b r a n c h o f f i c e s e r v i n gy o u r l o c a l i t y .
l f y o u h a v e a r e q u e s tf o r a c h a n g e i n p r o g r a m m i n g o r h a r d w a r ed e s i g n .c o n t a c t
your local IBM branch office.
l f y o u h a v e a n y c o m m e n t s o n t h e m a n u a l c o n t e n t , a d d r e s st h e m t o I B M C o r p o r a t i o n ,
P u b l i c a t i o n s ,D e p a r t m e n t 2 4 5 , R o c h e s t e r ,M i n n e s o t a5 5 9 0 , | .
@ C o p y r i g h t l n t e r n a t i o n a B u s i n e s M a c h i n e s o r p o r a t i o n1 9 6 9 , 1 9 7 0 , 1 9 7 1 , 1 9 7 3 , 1 9 7 4 , 1 9 7 5 . 1 9 7 7
l s C
Contents
SECTION 1, PREINSTALLATION PLANNING. . 1- 1 374lDataStationModelsland2 . . ., . . . 3-3j41
S y s t e m A r r a n g e m e n ta n d S p a c eR e q u i r e m e n t s . 1- 1 3 7 4 1 P r o g r a m m a b l e W o r k t a t i o nM o d e l s 3 a n d 4 . . . . 3 - 3 7 4 1
S
R a i s e dF l o o r s .1-1 3 8 8 1O p t i c aM a r k R e a d e r M o d' e l
l l
. ....._3-3881
ScheduI ing . 1- 2 5421 PrinterControl (For 1403Attachment). . . . . . . 3-5421
Six Months before Delivery
5 4 4 5 D i s k S t o r a g eD r i v e M o d e l s 1 a n d 2 . . . 3-5445.1
F o u r M o n t h s b e fo r e D e l i v e r y , l - z S445DiskStorageDriveModel3. . . . . . . 3-5445.2
One Week before MachineDelivery. . 1- 2 5448DiskstorageDrive. .....3-5443
E n v i r o n m e n t a lC o n s i d e r a t i o n s - t-z 5486 Card Sorter Models 1 and2 . 3-5486
T e m p e r a t u r ea n d H u m i d i t y 1 a
5 4 9 6 D a t a R e c o r d e r M o d e l sa n d 2 . .
l . . . . 3-5496
Dirt and Air Pollution .1-3
Room Acoustics. 1-?
S E C T I O N4 . S Y S T E M / 3 C A B L I N G I N F O R M A T I O N . . . . . 4 - 1
Fire Protection Equipment .1-3 M o d e4 C a b l i n g S c h e m a t i c
f .....4-1
Cabling .1-3 G0HertzSystems ......4-1
E l e c t r i c aR e q u i r e m e n t s
l ....14 s0HertzSystems ......4-1
PowerSupply . ... ... .14 M o d e6 C a b f i n g S c h e m a t i c
l ........4-2
PowerDistribution. .. -. .14 60HertzSystems ......4-2
PhaseRotation .......14 S0Hertzsystems ......4-2
Grounding. .......14 M o d e8 C a b l i n g S c h e m a t i c
l ........4-3
LightningProtection ....1_5 60HertzSystems ......4-3
Convenience utlets O .1_5 SoHertzsystems ......4-3
ServicingRequirements ...1_5 M o d e ll 0 C a b l i n g S c h e m a t i c . .....44
ShippingDimensions ......1_s GOHertzSystems ......44
S t a n d a r dS y m b o l s a n d S p e c i fi c a t i o n s . . t _5 SOHertzSystems .....44
Mndel2CablingSchematic. .......4-5
sEcTfoN2. sysTEMSpEctFtcATtoNS . . . . . . . . . . .24
G0HertzSystems ......4-5
System/3Model 4. .......24 SOHertzSystems ......4-s
System/3Model 6. .......2_6 Model 5CablingSchematic.
1 .......4-6
System/3Model 8. .......2_B 60HertzSystems. ..... _.4-6
System/3 Model 10 with IBM 5422 Disk Enclosure . . . .2-10.1
50HertzSystems. .........4-7
System/3 Model 10 with IBM 5424 MFCU . - .2-10.2 C a b fi n g S u m m a r y C h a r t . . . .4-B
System/3 Model 12 with 5203 . . . .2_12.1
System/3 Model 12 with 5203 and 5471 . . . . .2-12.2 S E C T I O N 5 , S Y S T E M / 3 S P E C I F I C A T I O NS U M M A R Y . . . 5 - 1
System/3 Model 15 with IBM 5422 Disk Enclosure . . .2-15.1
" EnglishUnits .... "...5-1
System/3 Model 15 with tBM 5424 MFCU . . .2-15.2 Metricunits .....S-3
System/3 Model 15 with IBM 541S processing nit,
U InchtoCentimeterConversionChart. . . . . .. .5-5
ModelsB,C,andD ...2-15.3
sEcTtoN3. MACH|NESPEC|F|CAT|ONS . . . . . . . . 3_129
129 Card Data Recorder . 3_l 29
1 2 5 5 M a g n e t i c C h a r a c t e rR e a d e r M o d e l s 1 . 2 ,
21, and22 3_1255.1
1255 Magnetic Character Reader Models 3 and 23 . . . 3:1255.2
1 2 7 0 O p t i c a f R e a d e rS o r t e r M o d e l s 1 , 2 , 3 , a n d 4 . _. . 3-1270
1403 Printer Models2 and 5. . . 3-1403.1
1403 Printer Model Nt . 3-1403.2
1442Card Read Punch Models6 and 7 . . . 3-1442
2 5 0 1 C a r d R e a d e rM o d e l s A 1 a n d A 2 . . . 3-2501
2560 Multi-Function Card MachineModelsAl
andA2. ...3-2560
3284 Printer Models 1, 2, and 3. . . 3_gZA4
3 3 4 0 D i s k S t o r a g eM o d e t A 2 . . . 3_3340.1
3 3 4 0 D i s k S t o r a g eM o d e t s B 1 a n d 8 2 . . . 3-3340.2
3 3 4 0 D i s k S t o r a g eM o d e l C 2 3-3340.3
3 3 4 4 D i r e c t A c c e s sS t o r a g eM o d e l 8 2 . . . ....3-3344
3 4 1 0 M a g n e t i c a p e U n i t M o d e l st , Z , a n d 3
T 3_34j0
3 4 1 1 M a g n e t i c a p e U n i t a n d C o n r r o l M o d e l s1 .
T
2,and3 ... 3-3411
Il
Section1. Preinstallation
Planning
C u s t o m e r s l a n n i n ga n I B M S y s t e m / 3 i n s t a l l a t i o n h o u l d
p s m a t e r l a la n d t h e t e m p l a t e sa r e f a s t e n e dl i g h t l y t o t h e
u s et h i s m a n u a l a s a g u i d e t o d e t e r m i n eh o w t h e y c a n d r a w i n gw i t h t r a n s p a r e n t a p e , t h e p r o p o s e df l o o r p l a n s
b e s t p r e p a r et h e i r p r o p e r t y f o r t h e a r r i v a la n d i n s t a l l a t i o n f
o c a n b e c o p i e d b y m a n y s t a n d a r dr e p r o d u c i n gm a c h i n e s .
t h e s y s t e m . C a r e { u la d v a n c ep l a n n i n gm a k e si t p o s s i b l e o r f
a c u s t o m e rt o i n s t a l l h i s e q u i p m e n ta n d u n i t s w i t h l i t t l e o r
W e i g h t so f t h e v a r i o u su n i t s d o n o t e x c e e dt h e f l o o r l o a d i n g
n o i n t e r r u p t i o no f t h e d a i l y o f f i c e r o u t i n e . l f t n e r e c o m _
c a p a c i t yo f m o s t b u i l d i n g s . l f i t s e e m st h a t t h e f l o o r l o a d i n g
m e n d a t i o n sc o n t a i n e di n t h i s m a n u a l a r e f o l l o w e d , a l l
c a p a c i t ym a y b e e x c e e d e d , e f e r t h e m a t t e r t o y o u r e n g i -
r
p h y s i c a la n d e n v i r o n m e n t a lr e q u i r e m e n t s i l l b e s a t i s ife d
w n e e r i n gs t a f f o r c o n s u l t a n t s o r i n v e s t i g a t i o n .
f
b e f o r et h e m a c h i n e s r r i v e .
a
l n s u m m a r y ,c o n s i d e rt h e f o l l o w i n g i t e m s w h e n d e t e r -
I B M s a l e s e p r e s e n t a t i v e c u s t o m e re n g i n e e r sa n d i n -
r s, , m i n i n g s p a c er e q u i r e m e n t s n d u n i t l o c a t i o n s :
a
s t a l l a t i o np l a n n i n gr e p r e s e n t a t i v e sr e a v a i l a b l eo c o n s u t t
a t
w i t h c u s t o m e r s n d p r o v i d e a s s i s t a n cw h e n r e q u e s t e d o
a e t 1. Work space
do so. 2. Storagespace
3. Desk space
4. Aislespace
S Y S T E MA R R A N G E M E N T A N D S P A C E R E Q U I R E M E N T S 5. Service learance
c
6. Futureexpansion
T h e I B M S y s t e m / 3 i s a c o m p a c t a r r a n g e m e no f i t s f u n c -
t 7. W e i g h t sa n d f l o o r l o a d i n g
t i o n i n g u n i t s . T h i s r e d u c e s p a c er e q u i r e m e n t sr e d u c e s
s , Heatdissipation
8.
t h e n e e df o r r a i s e df l o o r s , a n d p r o v i d e se f f i c i e n t a n o c o n - E l e c t r i c a l e q u i r e m e n t s i,n c l u d i n gs e r v i c e o u t l e t s . a n d
r
9. ,
v e n i e n to p e r a t o ra c c e s s .B e c a u s e a t a p r o c e s s i n g r e a s
d a c o m m u n i c a t i o n s a c iI i t i e s .
f
d i f f e r i n r o o m s i z e s , o l u m n s p a c i n g a n d c o m b i n a t i o n so f
c , 10. D o o r w a y s i z e s . l e v a t o rc a p a c i t i e sa n d l o a d i n gf a c i l -
e .
m a c h i n e s e q u i p m e n t ,a n d w o r k a r e a s .i t i s a d v i s a b l eo
, t i t i e s u s e d i n g e t t i n gt h e m a c h i n e s o t h e i r l o c a t i o n s .
t
p r e p a r ea f l o o r p l a n o f t h e p r o p o s e dd a t a p r o c e s s r n a r e a
g
s h o w i n gt h e l o c a t i o n a n d a r r a n g e m e no f a l l e q u i p m e n t t o
t
b e i n c l u d e d . A s y o u p l a n t h e a r e a ,c o n s i d e rt h e p o s s i b i l i t y
o f f u t u r e e x p a n s i o ns o t h a t , a s y o u r b u s i n e s s r o w s ,y o u
g Raised Floors
c a n a d d a d d i t i o n a le q u i p m e n tt o t h e i n i t i a l i n s t a l l a t i o n
w i t h o u t c o s t l y a n d t i m e - c o n s u m i n g e v i s i o n so t h e o r i g i n -
r t A r a i s e df l o o r :
a l p l a n so r s y s t e ma r e a . l f t h e i n s t a l l a t i o n i l l i n c l u d e
w
s e v e r ac a b l ec o n n e c t e du n i t s , a r a i s e df l o o r a r e as h o u l d
l o A l l o w s f u t u r e l a y o u t c h a n g ew i t h m i n i m u m r e c o n s t r u c -
b e c o n s i d e r e d . E a c h i n s t a l l a t i o n i l l a l s o h a v eo t h e r
w ilon cost.
e q u i p m e n t ,s u c h a s w o r k t a b l e s ,d e s k s ,c h a i r s ,a n d s t o r a g e
c a b i n e t s t h a t s h o u l d b e i n c l u d e di n t h e f l o o r p l a n sf o r t h e
, o Protectsthe interconnecting cablesand power
system area. Enough spaceshould also be provided to receptacl
es.
p r e v e n tl o s si n o p e r a t i n ge f f i c i e n c y .
o P r o v i d e s e r s o n n es a f e t y .
p l
A s a n a i d i n d e t e r m i n i n gy o u r f l o o r p l a n , I B M p r o v i d e s
p l a s t i ct e m p l a t e s( o r d e r n u m b e r X 2 1 - 9 0 9 8 ) o f e a c ho f t h e A r a i s e df l o o r c a n b e c o n s t r u c t e do f s t e e l ,a l u m i n u m , o r
S y s t e m / 3u n i t s . T h e t e m p l a t e sa r e s c a l e da t j / 4 i n c h = 1 f i r e - r e s i s t a nw o o d . ( T h e f r e e - a c c e st s p e r a i s e df l o o r i s
t y
f o o t ( 1 m m = 5 0 m m ) , a n d s h o w t h e f l o o r s p a c ea n d w o r k - p r e f e r r e d . ) l f m e t a l i s u s e d ,t h e r e m u s t b e n o m e t a l
i n g c l e a r a n c e e q u i r e df o r e a c h u n i t . W h e n c u t o u t a n d u s e d
r e x p o s e dt o t h e w a l k i n g s u r f a c e . S u c h e x p o s u r ei s c o n -
o n a n e q u i v a l e n ts c a l ed r a w i n g o f t h e d a t a p r o c e s s i n g r e a ,
a s i d e r e da n e l e c t r i c a s a f e t y h a z a r d . A n e x p o s e dm e t a l
l
t h e t e m p l a t e sc a n b e m o v e d a b o u t t o h e l p d e t e r m i n et h e s u r f a c ec a n a l s o c a u s es t a t i c d i s c h a r g e r o b l e m s .
p
best room arrangement. Serviceclearances can be over-
l a p p e di f t h e l a r g e rc l e a r a n c es m a i n t a i n e d . S p a c el i m i t a -
i T h e r a i s e df l o o r s h o u l d b e h i g h e n o u g ht o a c c o m m o d a t e
t i o n s , c o v e r c l e a r a n c es t o r a g e p a c e , n d a c c e s s i s l e s a y
, s a a m I B M c a b l e s ,p o w e r d i s t r i b u t i o n ,e t c . A f l o o r h e i g h t b e -
d i c t a t e s e v e r atl e n t a t i v ea r r a n g e m e n t b e f o r e t h e f i n a l f l o o r
s t w e e n4 i n c h e s n d ' l 2 i n c h e s( 1 0 c m a n d 3 1 c m ) u s u a l l y
a
p l a n i s e s t a b l i s h e d .l f t h e s c a l e r a w i n g i s o n t r a n s l u c e n t
d isacceptable.
1-1
SCHEDULING T h e h e a t p r o d u c e db y I B M u n i t s , l i s t e d i n B t u / h r a n d
kcal/hr in the summaryof specifications t the back of a
To be sure that the machine area is ready when the system t h i s m a n u a l ,m a y b e a s i g n i f i c a n tf a c t o r .
i s d e l i v e r e d . a k e a p h y s i c a lp l a n n i n gs c h e d u l e . B e c a u s e
m
e a c h i n s t a l l a t i o n i l l d i f f e r i n s o m e r e s p e c tf r o m a n y o t h e r ,
w A s t h e s ef a c t o r sc h a n g e ,v a r y i n ga m o u n t s o f h e a t a n d h u -
i t i s n o t p o s s i b l e o p r o v i d ea p r e c i s e c h e d u l ei n t h i s p u b _
t s m i d i t y m a y n e e d t o b e d e l i b e r a t e l yi n t r o d u c e do r d i s s i p a t e d
lication. The followingschedule an be modifiedto meet c b y m e a n so f h e a t i n g ,c o o l i n g .a n d h u m i d i t y c o n t r o l l i n g
t h e n e e d so f a g i v e ni n s t a l l a t i o n . e q u i p m e n tt o m a i n t a i n a n a c c e p t a b l e n v i r o n m e n t .
e
Six Months before Delivery A l l S y s t e m / 3 u n i t s a r e d e s i g n e d o o p e r a t ea t a l t i t u d e su p
t
t o 7 0 0 0 f e e t ( 2 1 3 4 m ) a n d a r e a i r c o o l e d . F a n so r n a t u r a l
R e v i e wt h e o r d e r s i x m o n t h s b e f o r e e q u i p m e n t d e l i v e r y . c o n v e c t i o nb r i n g c o o l a i r i n t o t h e u n i t f r o m t h e b o t t o m o r
A t t h i s t i m e t h e p r e l i m i n a r yl a y o u t o f t h e p r o p o s e di n s t a l - s i d e .c i r c u l a t et h e a i r . a n d e x h a u s tt h e r e s u l t i n gh e a t e da i r
l a t i o n s h o u l db e p r e p a r e d . i n t o t h e d a t a p r o c e s s i n go o m .
r
Seethe specification pagesfor temperature and relative
Four Months before Delivery h u m i d i t y r e q u ir e m e n t s .
F o u r m o n t h s b e f o r e m a c h i n e s r e s c h e d u l e d o a r r i v e ,p l a n s
a t A i r c o n d i t i o n i n ge q u i p m e n t m a y b e n e e d e di n s o m e
f o r t h e m a c h i n er o o m s h o u l d b e c o m p l e t ea n d s h o u l d h a v e
cases becauseof possibleextremes in temperature or
been approved by both the customer and the IBM repre- humidity in the data processing rea. When suchequipment
a
s e n t a t i v e . l f b u i l d i n g a l t e r a t i o n s( s u c ha s p a i n t i n g ,p l a s t e r - is required, it is recommended that it be designedfor oper-
i n g . o r e x p a n d i n ge l e c t r i cs e r v i c e r c o m m u n i c a t i o n s
o ation between 70o and 75"F (Z1r"and 24oC) and 40% and
f a c i l i t i e s ) r e r e q u i r e d ,h a v ea l l d r a w i n g sa n d s p e c i f i c a t i o n s
a 5 0 % r e l a t i v eh u m i d i t y . T h i s r e c o m m e n d e d a n g ef o r
r
for these alterationscomplete and the areasready for t e m p e r a t u r eo r h u m i d i t y p r o v i d e sa l a r g eu n i t - a v a i l a b l e
work to start. lf external cablesare required between units time buffer between the time that temperature or
o f t h e s y s t e m ,s u b m i t a c a b l eo r d e r f o r m a t t h i s t i m e i f h u m i d i t y l e a v e s h e r a n g ea n d r e a c h e sh e p e r m i t t e d e x -
t t
i t h a s n o t a l r e a d yb e e n s u b m i t t e d . t r e m e . T h e o p e r a t o r c a n u s et h i s t i m e b u f f e r t o t a k e
corrective measures. This range has also proven to be a
generallyacceptablepersonnelcomfort level.
One Week before Machine Delivery
H a v ea l l p l a n n e dm o d i f i c a t i o n sf o r w i r i n g , a i r c o n d i t i o n i n g , H u m id ity -A ssoci atd Prob I em s
a n d c o m m u n i c a t i o n s a c i l i t i e sc o m p l e t e a n d t e s t e d b y o n e
f
w e e k b e f o r e m a c h i n ed e l i v e r y . B u i l d i n g a l t e r a t i o n s h o u l d
s E x t r e m e si n r e l a t i v eh u m i d i t y , i f m a i n t a i n e df o r l o n g
a l s o b e c o m p l e t ea t t h i s t i m e . periods of time, may have an adverseeffect on the overall
o p e r a t i n ge f f i c i e n c y o f t h e i n s t a l l a t i o n n d s h o u l d b e
a
a v o i d e dw h e n e v e rp o s s i b l e . H u m i d i t y l e v e l sa p p r o a c h i n g
ENVI RONMENTAL CONSIDERATIONS t h e m a x i m u m l i m i t m a y c a u s ei m p r o p e r f e e d i n ga n d
s t a c k i n go f c a r d s .p a p e r d o c u m e n t sa n d c o n t i n u o u sf o r m s .
H i g h r e l a t i v eh u m i d i t y m a y a l s oc a u s eo p e r a t o rd i s c o m f o r t
Temperature and Humidity a n d c o n d e n s a t i o n n w i n d o w s a n d o u t s i d ew a l l s .
o
T h e t e m p e r a t u r ea n d h u m i d i t y o f a d a t a p r o c e s s i n g r e a
a H u m i d i t y l e v e l sa p p r o a c h i n g h e m i n i m u m l i m i t a g g r a v a r e
t
a r e i n f l u e n c e db y m a n y f a c t o r s . T h e s ei n c l u d e : p r o b l e m sa s s o c i a t e d i t h s t a t i c e l e c t r i c i t y . S t a t i c c h a r g e s ,
w
w h i c h a r e u s u a l l yd i s s i p a t e d i t h o u t a n y a d v e r s e f f e c t s ,
w e
. Heat loads produced by mechanicaland electrical t e n d t o b u i l d i n t o s i g n i f i c a n tc h a r g e s h e n t h e h u m i d i t y i s
w
equrpment. l o w . T h i s a c c u m u l a t i o nc a u s e s a p e rt o c l i n g t o g e t h e ra n d
p
can also interfere with the most eff icient feeding ano
o T h e v o l u m e o f f r e s h a i r e n t e r i n gt h e r o o m . i t s t e m p e r -
stacking of cards and paper. High voltage static discharges
a t u r e ,a n d i t s h u m i d i t y . f r o m m o v i n g p e o p l e ,c a r t s ,f u r n i t u r e , p a p e r ,e t c , c a n o e
o b j e c t i o n a b l e o o p e r a t i n gp e r s o n n e l n d , i n e x t r e m e c a s e s ,
t a
r The amount of body heat introduced by personnel. can interfere with the correct operation of electronic
equrpment.
r T h e a m o u n t o f h e a t i n t r o d u c e do r d i s s i p a t e d h r o u g h
t
w a l l s ,c e i l i n g s , n d f l o o r s .
a
1-2
Cardand PaperDocument Storage A n o n w e t t i n gi r e e x t i n g u i s h i n g e n t o r e l e c t r i c a l
f ag f
e q u i p m e n( C l a s C h a z a r d i)s r e c o m m e n d e d f l o c a l
t s l.
Storage areas cardsand papershouldbe kept at the
for b u i l d i n g o d e so r d i n a n c e s ,r i n s u r a n cre g u l a t i o r e q u i r e
c , o e n
r
s a m e e l a t i v e u m i d i t ya st h e a i r i n t h e d a t ap r o c e s s i n g
h w a n
a u t o m a t i c a t e rs p r i n k l e r s , p r e - a c t i os p r i n k l es y s t e m
r
r o o m . O t h e r w i s e .x t r e m e i n h u m i d i t yd i f f e r e n c eis t h e
e s n i s s u g g e s t ep r o v i d e dh a t t h i s t y p e o f s p r i n k l e irs i n
d, t
two areas may alterthe sizeand weightof the cardand a g r e e m e n t i t h l o c a lc o d e s n d r e g u l a t i o n s .
w a
paper when the documents movedinto the working
are
area. This rapidchange resultin warpage, most
can the
frequentsource feeding of and stacking problems.
lf workingand storage areas cannotbe kept at the same
CABLING
r e l a t i v e u m i d i t y , l l o wa m p l e i m e f o r c a r d s n d p a p e r o
h a t a t
achieve moisture
a balance with the dataprocessing room
The compact arrangementof System/3 units reducesthe
atmosphere beforeusing the documents.
need for external cables. Electrical connections between
the processing nit and unitsthat can be physically
u
Do not storecardsnearheating pipes, radiators, in or
places attached to it are made with internal cables. These cables
that are hot and dry. lf you do, the cardsmay lose
a r e s u p p l i e dw i t h t h e u n i t s a n d d o n o t r e q u i r es p e c i a l
m o i s t u r es h r i n ki n a l l d i m e n s i o n s , d b u c k l e .
, an
ordering.
Other units can be connected to System/3 by means of
Dirt and Air Pollution
I B M - p r o v i d e de x t e r n a l i n t e r c o n n e c t i n g a b l e s . T h e c a b l e s
c
r e q u i r e df o r t h i s i n t e r c o n n e c t i o n r e s h o w n i n s e c t i o n4 ,
a
T h ea m o u n to f c o n t a m i n a t i ou s u a l l yo u n d i n a i r w i t h i n
n f
System /3 Cab I i ng I n format i o n.
a n o r m a lb u s i n e s sn v i r o n m e n t i l l n o t i n t e r f e r e i t h t h e
e w w
o p e r a t i o n f t h e I B M e q u i p m e n t . o w e v e rt,a k e n o r m a l
o H
E a c hc a b l ei s i d e n t i f i e d b y a c a b l eg r o u p n u m b e r a n d i s
precautions keepdust.dirt. and other foreignmatter
to
o r d e r e db y f i l l i n g i n t h e d e s i r e dl e n g t h o n t h e C a b l eO r d e r
awayfrom the machines.lf the systemmust be installed
Form (212O-215O]. The cable length is determined by
.
in an areahaving high dust contentor wherethere is an
a
measuringthe center-to-centerdistance between machine
exposure abrasive
to materials corrosive
or gases, contact c a b l ee n t r y h o l e sa l o n g t h e i n t e n d e dr o u t e o f t h e c a b l e .
a n I B M i n s t a l l a t i op l a n n i n g n g i n e e r r a d v i c e n d
n e fo a W h e n m a c h i n e s r e m o u n t e d o n a r a i s e df l o o r . a d d t w i c e
a
recommendatio ns.
the height of the raised floor to the distance between
m a c h i n ec a b l e e n t r y h o l e s . I B M m a k e sa l l o w a n c ef o r
t h a t p o r t i o n o f t h e c a b l et h a t i s f r o m t h e f l o o r i n t o t h e
Room Acoustics
m a c h i n e . C a b l el e n g t h ss h o u l d b e k e p t a s s h o r t a s p r a c -
t i c ab l e .
l f y o u n e e d q u i e t e r o o m ,c o n s i d etrh e f o l l o w i n g c o u s -
a a
tical treatments:
E x t e r n a lc a b l e sm u s t b e o r d e r e da t l e a s t 1 2 0 d a y s p r i o r t o
m a c h i n ed e l i v e r y . O r d e r sw i t h l e s st h a n 1 2 0 d a y s l e a d t i m e ,
1. The greatest soundreduction will be achievedby
or orders for cablesthat exceed the maximum length, may
treatingthe ceiling. Bestresults can be expected
r e s u l t i n e x t r a c h a r g e s .C o n s u l t y o u r I B M s a l e s e p r e s e n t a t i v e .
r
from a droppedporousceiling. lf overhead ducts
exist,noisemay be transmitted from room ro room
External cablesshould be protected from physical damage
unlessproperprecautions taken.
are
in some manner that does not present a safety hazard to
o p e r a t i n gp e r s o n n e l .
2. For largerooms,the floor is the second most effec-
t i v ea r e a n w h i c ht o a p p l ya b s o r b e n t a t e r i a l .
o m
3. Reflectiveand transmitted sound can be reduced by
proper treatment of the walls.
Fire ProtectionEquipment
The machine room shouldbe equipped with portable
f i r e e x t i n g u i s h eos s u i t a b l e i z e o r q u i c k ,e f fi c i e n tu s e .
rf s f
1-3
E L E C T RI C A L R E O U IR E M E N T S Power Distribution
A l l r e a s o n a b l e f f o r t s h a v eb e e n m a d e i n t h e m a c h i n e S y s t e m / 3r e q u i r e sn o s p e c i a lp o w e r d i s t r i b u t i o n . T h e
d e s i g nt o e n s u r es a t i s f a c t o r y p e r a t i o nf r o m t h e n o r m a l
o s y s t e mc a n o p e r a t eo n t h e f e e d e rt h a t s u p p l i e s t h e r l o a d s
o
p o w e r s u p p l i e db y m o s t p o w e r c o m p a n i e s .T h e r e a r e , i f t h e r e a r e n o u n u s u a ll o a d s ,a s d i s c u s s e dn t h e p r e c e d i n g
i
h o w e v e r .m a n y o u t s i d e s o u r c e s h a t c a n c a u s er r a n s t e n t
t t e x t . O f c o u r s e ,a l l w i r i n g i n s t a l l e ds h o u l d c o m p l y w i t h
e l e c t r i c a ln o i s es i g n a l s h i c h m a y a f f e c t m a c h i n eo p e r a t r o n s .
w local eiectrical codes.
T h e e l e c t r i cp o w e r e n v i r o n m e n ts h o u l d b e c h e c k e df o r
O n e b r a n c h c i r c u i t i s r e q u i r e df o r t h e p r o c e s s i n g n i t ( 3 0
u
u n u s u a ll o a d sw h i c h m i g h t i n d u c e e x c e s s i v e o i s e i n t o t h e
n a m p e r e ,t h r e e p h a s eo r 2 0 a m p e r e .s i n g l ep h a s ef o r t h e
b r a n c h c i r c u i t f o r t h e s y s t e m . S w i t c h i n gh e a v y i n d u c t i v e
5 4 0 6 ; 3 0 a m p e r e ,t h r e e p h a s ef o r t h e 5 4 0 8 , b 4 1 0 a n d
l o a d so r o p e r a t i n gc e r t a i nt y p e s o f e q u i p m e n t n e a r t h e
5 4 1 5 ) . A n a d d i t i o n a l3 0 a m p e r e ,t h r e e p h a s eb r a n c n
s y s t e mc a n c a u s ep r o b l e m s ,e v e nt h o u g h t h e s o u r c ei s o n a c i r c u i t i s r e q u i r e df o r t h e 5 4 2 1. P o w e r i s d i s t r i b u t e dv i a
d i f f e r e n t b r a n c hc i r c u i t . l f s u c h a c o n d i t i o n i s s u s p e c t e d ,
i n t e r n a ls y s t e mc a b l i n gf r o m t h e p r o c e s s i n g n i t t o a l l
u
a thorough investigation hould be madeto determine
s p h y s i c a l l y - a t t a c h eu n i t s w i t h t h e e x c e p t i o no f t h e 5 4 2 1 .
d
w h e t h e r c o r r e c t i v em e a s u r e s h o u l d b e t a k e n . I n s o m e
A d d i t i o n a l b r a n c h c i r c u i t s m a y b e r e q u i r e df o r o t h e r
cases.it may be advisableto provide a separatefeeder for units (see Section 5, System/3 Specification Summary).
t h e s y s t e md i r e c t l y f r o m t h e m a i n b u i l d i n g p o w e r . I n
extreme cases severeelectrical noise, it may be necessary
of B r a n c hc i r c u i t ss h o u l d b e p r o t e c t e db y c i r c u i t b r e a k e r s
t o i n s t a l la n i s o l a t i o nt r a n s f o r m e ra n d / o r a n R F f i l t e r . s u i t a b l ef o r m o t o r l o a d a p p l i c a t i o na n d s h o u l d c o n t a i n
w i r i n g t h a t w i l l h a n d l et h e s a m el o a d . T h e c i r c u i t
Some common sourcesof electrical noise are: b r e a k e r s h o u l d b e p l a c e di n a n u n o b s t r u c t e da n d w e l l -
s
l i g h t e da r e a i n t h e d a t a p r o c e s s i n go o m .
r
a i r c o n d i t i o n i n gd e v i c e s
e l e c t r i c aw e l d e r s
l A s a s a f e t y p r e c a u t i o n ,t h e r e s h o u l d a l s o b e p r o v i s i o n s o r
f
electricalfurnaces simultaneously isconnecting ower to all data processing
d p
elevators e q u i p m e n t i n t h e r o o m . T h e d i s c o n n e c t i n g e a n ss h o u l d
m
electrostaticcopying machines b e c o n t r o l l e d f r o m l o c a t i o n sr e a d i l Va c c e s s i b l t o t h e
e
large,brush-type morors operator and at designatedexits from the data processirrg
room.
A n I B M i n s t a l l a t i o np l a n n i n ge n g i n e e r h o u l d b e c o n s u l t e d
s
if doubt exists whether corrective or preventive measures
shouldbe taken. PhaseRotation
The three phasepower receptacles for use with the system
Power Supply must be wired for correct phaserotation. The correct
p h a s er o t a t i o n ( l o o k i n g a t t h e f a c e o f t h e r e c e p t a c l e ) s
i
T h e I B M S y s t e m / 3 p r o c e s s i n g n i t s o p e r a t eo n s t a n d a r d
u c o u n t e r c l o c k w i s er o m t h e g r o u n d p i n t o p h a s e1 , t o
f
t h r e e - p h a s e o w e r ( s i n g l ep h a s eo p e r a t i o n i s a v a i l a b l e o r
p f p h a s e2 , a n d t o p h a s e3 .
t h e M o d e l s4 a n d 6 i n 2 O 8 1 2 3 0v o l t , 6 0 H z o n l y ) . M o s t
o t h e r u n i t s u s e dw i t h t h e s y s t e mo p e r a t eo n s i n g l ep h a s e
p o w e r . R e f e r t o t h e s u m m a r y o f s p e c i f i c a t i o n so r t h e
f Grounding
r e q u i r e m e n t s f i n d i v i d u a lu n i t s .
o
P o w e r c o r d s s u p p l i e dw i t h e a c h I B M u n i t h a v ea g r e e n ( o r
T h e v o l t a g et o l e r a n c em u s t b e m a i n t a i n e dw i t h i n t 1 0 % o f g r e e nw i t h y e l l o w t r a c e ) w i r e g r o u n d i n gc o n d u c t o r f o r
the rated machine voltage (measuredat the receptacle) e q u i p m e n tg r o u n d . T h e b r a n c h c i r c u i t r e c e p t a c r e s
when the unitsare operating. r e c o m m e n d e dp r o v i d e f o r c o n n e c t i o no f t h i s e q u i p m e n t
g r o u n d . E a c hc u s t o m e r - s u p p l i eb r a n c h c i r c u i t m u s t n a v e
d
T h e l i n e f r e q u e n c y m u s t b e m a i n t a i n e dw i t h i n t 1 1 2 c v c l e a n i n s u l a t e d i r e c o n d u c t o r , e q u a l t o t h e s i z eo f t h e p h a s e
w
p e r s e c o n d( H z ) . c o n d u c t o r s ,f o r t h e p u r p o s eo f g r o u n d i n ge q u i p m e n t . A l l
b r a n c h c i r c u i t g r o u n d i n gw i r e s m u s t b e t i e d t o a c o m m o n
T h e m a x i m u m h a r m o n i c c o n t e n t o f t h e p o w e r s y s t e mv o l - g r o u n d p o i n t a t t h e d i s t r i b u t i o n p a n e l ,a n d a s i n g l e
tage waveforms on the equipment feeder must not exceed g r o u n d i n gw i r e s h o u l d b e r u n f r o m t h e d i s t r i b u t i o n p a n e l
1 5 7 ow h e n t h e e q u i p m e n t i s n o t o p e r a t i n g . t o s e r v i c e r o u n d o r s u i t a b l eb u i l d i n g g r o u n d . T h i s i s a
g
noncurrent carrying ground, not a neut